Pombi yesimbi yeASTM A556 inonyanya kushandiswa sepombi yesimbi yekabhoni isina musono inodhonzwa inotonhorera yekupisa mvura inoyerera nechubhu.
Kushandiswa kwayo ipombi yesimbi isina musono ine saizi yedhayamita yekunze iri pakati pe15.9-31.8mm uye ukobvu hwemadziro husingasviki 1.1mm.
Chinyorwa chino chinotarisa pamapaipi esimbi uye hachisanganisire maU-tubes ataurwa muchiyero.
Dhayamita yekunze: 5/8 - 1 1/4 in. [15.9 -31.8 mm].
Ukobvu hwemadziro: ≥ 0.045 mu [1.1 mm].
ASTM A556 inoronga magiredhi matatu,Giredhi A2, Giredhi B2uyeGiredhi C2.
Machubhu esimbi anofanira kugadzirwa nemusonokugadzirisa uye inofanira kutorwa ichitonhora.
Machubhu esimbi asina musono anodhonzwa nechando anopa kurongeka kwepamusoro-soro uye kupedzisa kwakanaka kwenzvimbo uku achinatsa chimiro che microstructure uye achivandudza hunhu hwayo hwemakanika hwakadai sekusimba nekuoma. Chimiro chisina musono chinoita kuti machubhu agare akasimba uye akachengeteka kana achinge aiswa pakupisa kwakanyanya, zvichiita kuti akwanise kushandiswa mumaindasitiri anoda kunyatsojeka uye kushanda zvakanaka.
Zvisinei, machubhu esimbi asina musono anodhonzwa nechando anodhura zvikuru kugadzira nekuti maitiro avo ekugadzira akaomarara uye anoda mashandiro nemidziyo yakaoma. Pamusoro pezvo, kushanda kwavo zvishoma pakugadzira, kunyanya mukugadzirwa kwehuwandu hwakawanda, hakuna mari yakawanda semaitiro ekupisa, uye mune dzimwe nguva panogona kunge paine kurasikirwa kwakawanda kwezvinhu, zvichideredza kushandiswa kwavo mune mamwe mashandisirwo.
Machubhu anodhonzwa nechando anofanira kugadziriswa nekupisa mushure mekunge adhonzwa nechando apfuudzwa patembiricha ye1200°F [640°C] kana kupfuura kuitira kuti akwanise kudhonzwa zvakanaka kuti akwanise kumonerwa mumachubhu uye kuti asvike pahunhu hwemakanika sezvakatsanangurwa.
Kana ongororo yechigadzirwa ichiitwa, tarisa ASTM A751 kuti uwane nzira dzekuyedza.
1. Nzvimbo Inodhonza
Nzira yekuedza: ASTM A450 Chikamu 7.
Pamachubhu anosvika makumi mashanu, chubhu imwe chete inofanira kusarudzwa kuti iongororwe.
Pamachubhu anopfuura makumi mashanu, machubhu maviri anofanira kusarudzwa kuti ayedzwe.
2. Kuoma
Nzira yekuedza: ASTM A450 Chikamu 23.
Mienzaniso inobva mumachubhu maviri ekuyedza kubva muchikamu chimwe nechimwe inofanira kuongororwa kuomarara kweBrinell kana Rockwell.
Kuomarara kwepaipi yeRockwell hakufanirwe kudarika kwakaratidzwa mutafura.
| Giredhi | Kuoma |
| Giredhi A2 | 72 HRBW |
| Giredhi B2 | 79 HRBW |
| Giredhi C2 | 89 HRBW |
3. Muedzo weKutsvedza
Nzira yekuedza: ASTM A450 Chikamu 19.
Kuedzwa kwekutsetseka kunofanira kuitwa pamuenzaniso mumwe chete kubva kumagumo ese echubhu yesimbi yakagadzirwa kubva kusarudzo yemachubhu asingapfuuri 125 kubva kuchikamu chimwe nechimwe.
4. Muedzo weKupisa
Nzira yekuedza: ASTM A450 Chikamu 21.
Miedzo yekupfura inofanira kuitwa pamuenzaniso mumwe chete kubva kumagumo ese echubhu yakapedzwa, nemachubhu asingapfuure 125 akasarudzwa kubva mubhechi rega rega.
Hapana bvunzo ye hydrostatic inosungirwa kuitwa pamapombi esimbi.
Zvisinei, pombi yega yega yeU inofanira kuongororwa nemvura isingaparadzi.
Chubhu yega yega inofanira kuyedzwa nechishandiso chekuyedza chisingaparadze chinogona kuona zvikanganiso muchikamu chose chechubhu mushure mekupisa pamusoro mushure mekudhonza kwekupedzisira kwechando.
Nzira dzekuedza dzisingaparadzi dzeSpecificationE213, TsanangudzoE309(yezvinhu zve ferromagnetic), TsanangudzoE426(yezvinhu zvisiri zvemagineti), kana TsanangudzoE570inogona kusarudzwa kuti iongororwe.
Kushivirira kunotevera hakushande kune chikamu chakakombama cheU-tube.
Pombi yapera inofanira kunge isina chikero asi inogona kunge iine firimu re oxide pamusoro.
Machubhu apedzwa anofanira kunge akatwasuka zvine mwero uye aine magumo akatsetseka asina maburi. Machubhu anofanira kunge akagadzirwa nemaoko uye anofanira kunge asina zvikanganiso pamusoro zvisingakwanise kubviswa mukati memiganhu inobvumirwa pamadziro.
Kubviswa kwezvikanganiso pamusoro pechinhu zvakaita semavanga ekubata, mavanga ekutwasanudza, mavanga emamanda akareruka uye mavanga ekufa, makomba asina kudzika, uye mapatani emakero hazvizodiwi chero bedzi zviri mukati memiganhu inotenderwa nemadziro.
Madhayamita emukati nekunze epombi yapera anofanira kuputirwa kudzivirira ngura panguva yekufambisa.
Mapfekero akajairika ndeayamafuta ekudzivirira ngura, mavhanishi, kanapendi.
Kusarudzwa kwechinhu chekuputira kunowanzoenderana nezvinodiwa zvekushandisa paipi yesimbi, nzvimbo yaunoda kushandisa, uye nguva yekudzivirira.
Mahita emvura anodziya neTubular: Iyi ndeimwe yenzira dzinonyanya kushandiswa paASTM A556 steel tubes.
Muindasitiri yemagetsi, maheater emvura inoshandiswa kupisa mvura yemuboiler, kazhinji nekubvisa utsi. Kushandiswa kwemhando iyi yemachubhu esimbi kunobvumira kutamiswa kwesimba rekupisa zvinobudirira, zvichivandudza kushanda zvakanaka kwesimba uye mashandiro ehurongwa.
Zvinochinja-chinja kupisa uye zvinokonzeresa kupisa: Nekuda kwehunhu hwayo hwakanaka hwekutamisa kupisa uye kuramba ngura, ASTM A556 steel tubes yakakodzerawo kushandiswa mune mamwe marudzi eheat exchangers nema condenser, ayo anoshandiswa mumhando dzakasiyana dzemakemikari, petrochemical, uye mamwe maitiro emaindasitiri.
Masisitimu emhepo ane simba guru: Kudzivirira kupisa kwakanyanya uye kumanikidzwa kwakanyanya kweASTM A556 tubes kunoita kuti ikodzere kushandiswa mumasisitimu emhepo ane kumanikidzwa kwakanyanya uye mamwe mashandisirwo anoda kudzivirira kumanikidzwa kwakanyanya uye kupisa kwakanyanya.
ASTM A179/A179M- Uyu ndiwo mwero wezvishandiso zvekupisa zvesimbi yekabhoni zvisina musono zvinodhonzwa zvinotonhora uye machubhu e condenser ekushandira cryogenic.
ASTM A192/A192M- Inotsanangura zvinodiwa zvehunyanzvi zvemachubhu ebhoyira esimbi yecarbon isina musono emabhoyira anoshandiswa mukushandira kwemhepo ine simba rakawanda.
ASTM A210/A210M- Standard yemachubhu eboiler esimbi yecarbon yepakati nepakati isina musono yemaboiler nemasuperheater.
ASTM A213/A213M- Inopa zviyero zve ferritic ne austenitic alloy steel boiler, superheater, uye heat exchanger tubes.
ASTM A249/A249M- Zvinoshandiswa pakugadzira bhaira resimbi rinosungirirwa, superheater, heat exchanger, uye machubhu e condenser.
ASTM A334/A334M- Standard yekuisa machubhu esimbi yekabhoni nesimbi ye alloy isina musono uye yakasungirirwa kuti ishandiswe se cryogenic.
Imwe neimwe yemitemo iyi inosanganisira machubhu esimbi anoshandiswa muzvishandiso zvinopisa, mabhoyira kana zvimwe zvakafanana. Mutemo upi unosarudzwa unoenderana nezvinodiwa zvekushandisa, zvakaita sekupisa kwekushanda, chiyero chekumanikidzwa, uye kuramba ngura kunotarisirwa.
Kubva payakatangwa muna 2014, Botop Steel yave kambani inotungamira mukutengesa mapaipi esimbi yekabhoni kuChamhembe kweChina, inozivikanwa nebasa rakanaka kwazvo, zvigadzirwa zvemhando yepamusoro, uye mhinduro dzakakwana.
Kambani iyi inopa mapaipi akasiyana-siyana esimbi yekabhoni nezvimwe zvigadzirwa zvinoenderana nazvo, zvinosanganisira mapaipi esimbi asina musono, ERW, LSAW, uye SSAW, pamwe chete nehurongwa hwakazara hwemapipi nemaflange. Zvigadzirwa zvayo zvehunyanzvi zvinosanganisirawo alloys dzemhando yepamusoro nesimbi dzisina ngura dzinogadzirwa neaustenitic, dzakagadzirirwa kusangana nezvinodiwa nemapurojekiti akasiyana-siyana emapaipi.
